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Highest temperature in Shanghai on July 20?

"Highest temperature in Shanghai on July 20?" — odds, fees, regulatory status. Is Kalshi Legal in California as a Polymarket alternative.

35°C 100% 28°C or below 0% 29°C 0% 30°C 0% Volume: $169K Closes: 20 Jul 2026
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Highest temperature in Shanghai on July 20?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Is Kalshi Legal in California) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Go to the live market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Go to the live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Go to the live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Go to the live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Go to the live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
35°C100%
28°C or below0%
29°C0%
30°C0%
31°C0%
32°C0%
33°C0%
34°C0%
36°C0%
37°C0%
38°C or higher0%

Market context

Shanghai will experience its peak summer heat on 20 July 2026, with the highest temperature recorded at Pudong International Airport determining the market outcome. Current forecasts indicate maximum temperatures reaching 38°C, accompanied by high humidity, scattered clouds, and a significant chance of local thunderstorms later in the afternoon [2][3]. The crowd-implied probability of 0% for the YES outcome suggests the market expects the temperature to fall outside the specific range offered, likely due to the anticipated cooling effect of precipitation or cloud cover limiting the peak heat.

Historically, Shanghai in July sees average highs between 33°C and 35°C, though extreme heatwaves can push temperatures toward 39°C or higher [4]. Comparable cases from recent years show that sudden thunderstorms, as forecast for today, frequently cap maximum temperatures below 38°C, which may explain the low probability assigned to higher ranges. Traders should monitor real-time updates from Wunderground and local meteorological announcements, as the settlement relies strictly on the highest recorded temperature at the Pudong station [1].

Regulatory frameworks add complexity to accessibility: Germany’s GlüStV imposes strict licensing for betting platforms, while the US CFTC maintains reach over prediction markets involving commodity-linked outcomes. The ‘no-KYC up to $1,500’ feature allows users to trade this weather market without immediate identity verification, enhancing accessibility for those under the threshold, though it does not exempt the platform from broader compliance obligations. These factors shape how traders approach the market’s liquidity and settlement risk.

Sources: 1 · 2 · 3 · 4

Methodology

This overview of Highest temperature in Shanghai on July 20? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.

Resolution & payout

On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.

FAQ

Is Polymarket legal in my country?
Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legal in California has a different geo footprint.
Do I need to KYC for Is Kalshi Legal in California?
Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
How are winnings taxed?
Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
Can I trade anonymously?
Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legal in California stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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